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A cat jumps from 2.5-meter-tall bookshelf to a 1.3-meter-tall countertop. If the cat has a mass of 15kg on Earth, what is the change in the potential energy of the cat. ​
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A cat jumps from 2.5-meter-tall bookshelf to a 1.3-meter-tall countertop. If the cat has a mass of 15kg on Earth, what is the change in the potential energy of the cat. ​

User Abigwonderful
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1 Answer

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GPE = Height × Gravitational field strength × Mass

GFS on Earth = 9.8 N/kg

Starting GPE = 2.5 m × 9.8 N/kg × 15 kg

= 367.5 J

Ending GPE = 1.3 × 9.8 N/kg × 15 kg

= 191.1 J

GPE displacement = 367.5 J - 191.1 J

= 176.4 J

The cat experiences a change of 176.4 J of potential energy.

User WooCaSh
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